在执行http POST期间,我将响应存储为String响应.
HttpResponse httpresponse = httpclient.execute(httppost); httpentity resEntity = httpresponse.getEntity(); response = EntityUtils.toString(resEntity);
如果我打印响应,它看起来像:
<?xml version="1.0" encoding="UTF-8"?> <response status="ok"> <sessionID>lo8mdn7bientr71b5kn1kote90</sessionID> </response>
我想将sessionID存储为字符串.我试过了
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = factory.newDocumentBuilder(); InputSource is = new InputSource(new StringReader(xml));
和这样的各种方法,但它不会让我运行代码,因为DocumentBuildFactory和InputSource是无效的.
我应该怎么做才能从这个XML中提取特定的字符串?
解决方法
这只是快速而肮脏的测试.它对我有用.
import java.io.IOException; import java.io.StringReader; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.ParserConfigurationException; import org.w3c.dom.Document; import org.w3c.dom.NodeList; import org.xml.sax.InputSource; import org.xml.sax.SAXException; public class Test { public static void main(String[] args) { String xml= "<?xml version=\"1.0\" encoding=\"UTF-8\"?><response status=\"ok\"><sessionID>lo8mdn7bientr71b5kn1kote90</sessionID></response>"; DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder; InputSource is; try { builder = factory.newDocumentBuilder(); is = new InputSource(new StringReader(xml)); Document doc = builder.parse(is); NodeList list = doc.getElementsByTagName("sessionID"); System.out.println(list.item(0).getTextContent()); } catch (ParserConfigurationException e) { } catch (SAXException e) { } catch (IOException e) { } } }
输出:lo8mdn7bientr71b5kn1kote90
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